## Problem

Harsh was recently gifted a book consisting of  pages. Each page contains exactly  words printed on it. As he was bored, he decided to count the number of words in the book.

Help Harsh find the total number of words in the book.

### Input Format

• The first line of input will contain a single integer , denoting the number of test cases.
• Each test case consists of two space-separated integers on a single line,  and  — the number of pages and the number of words on each page, respectively.

### Output Format

For each test case, output on a new line, the total number of words in the book.

• 1≤�≤100
• 1≤�≤100
• 1≤�≤100

### Sample 1:

Input

Output

4
1 1
4 2
2 4
95 42

1
8
8
3990


### Explanation:

Test case 1: The book consists of only 1 page, and each page has only 1 word. Hence, the total number of words is 1.

Test case 2: The book consists of 4 pages, and each page has 2 words. Hence, the total number of words is 2+2+2+2=8.

Test case 3: The book consists of 2 pages, and each page has 4 words. Hence, the total number of words is 4+4=8.

Test case 4: The book consists of 95 pages, and each page has 42 words. Hence, the total number of words is 3990.